Single-trigger device.



(i. H. GIDDINGS. SINGLE Imagen Dev'IcE. APPLICATION FILED oct. 4. ma.

1 ,302 ,9 l Q. Patented Muy 6,' 1919.

Z SHEETS- SHEET L.

G. H. GIDDINGS.

SINGLE TRIGGER DEVICE.

APPLICATION mio ocT. w. ma.

1 ,302 ,9 1 O. f Patented May 6, 1919.

2 SHEETS-SHEET 2.

wrye Giddgg@ GEORGE H. GIDDINGS, 0F ILION, NEW YORK.

SINGLE-TRIGG-ER DEVICE.

Specification of Letters Patent.

Patented May 6, 1919.

` Application led October 4,1918. 4Serial No. 256,836.

To all lwhom z't may concern:

Be it known that I, GEORGE H. GIDDINGS, a citizen of the United States,residing at Ilion, in the county of Herkimer and the State of New York,have invented certain new and useful Improvements in Single-TriggerDevices, of which the following is a specification.

This invention relates to means whereby one trigger only is employed fora double barrel gun, of either the over and under or side by side type.I have illustrated the invention as applied to a gun of the type rstmentioned.

Ina gun of this over and under type the one trigger discharges thebarrels alternately, commencing with either the upper or the lowerbarrel, or one barrel may be discharged successively, the other oneremaining unused.

The invention also consists in the novel features of constructionhereinafter described, pointed out in the claims and shown in theaccompanying drawings, in which v Figure 1 is a longitudinal, verticalsectional view showingparts in position to discharge the upper barrelfirst.

Figs. 2, 3, and 4 are plan views of the trigger plate and parts carriedthereby, movable parts being in different positions, and a tang screw'block being in section.

Fig. 5 is a side elevation of a trigger blade.

Fig. 6 is a detail plan view of the blade.

Fig. 7 is a detail view of a trigger blade post and selective button.

Fig. 8 is a side elevation of an escapement.

Fig. 9 is a detail view of an escapement post. v

Fig. 10 is a view of one of the hammers. "Fig 11 is a broken detailsection corresponding to Fig. 1.

In these drawings 1 designates the gun frame, .1"L a main tang screwblock, slotted, 2 atrigger plate, and 3 a slot in said trigger plate.

Two hammers 4 are each provided with cam portions 5 and two sears Gareemployed.

All of these parts are shown and described in detail in my applicationnow on file and bearing Serial No. 251,259. r

A trigger blade post 7 has its shank working in the slot 3, and carrieson its lower end portion a selective button 8. The upper inner end ofthe post is slotted to receive a trigger blade 9. This blade has at itsforward end a vertically arranged loop 10 and its rear end is forked asat 11.

The blade post 7 is rotatable in the slot 3 as well as slidable and thetrigger blade is mounted in the post for 4vertical swinging movement.This allows for two blade movements, one vertical and one lateral. Thevertical movement is due to a spring 12 and -the lateral to a spring 13.A

The lateral movement of the blade is under the control of an escapement16 and escapement posts 14 and 15.

In the loop portion 10 is mounted a roller 17 adapted for engagementwith the cam portions 5 of the hammers'.

The trigger blade is in operative engagement with the usual trigger 9a.

It will be seen in Fig. 1 that the trigger plate 2 is in section showinga side view of trigger mechanism and that blade post 7 extends throughthe slot 3 and is held on the outside by the selective button 8 which isscrewed into the post shank.

When selective button 8 is set in its forward position as selen in Fig.1 the roller 17 will coperate with the cam 5 ofthe right hand hammer 4,which fires upper barrel, and when hammers are thrown into cockedposition by opening of the gun, as described in the application abovereferred to, it will carry the rear end of blade 9 in its lateralmovement to the right, that is under the right hand sear 6, controllingthe upper barrel. The rear end of blade 9 then rests below a lateralextension on the rear end of the sear and above the trigger, or betweenthe trigger and the scar. If therefore the trigger is pulled the bladeis forced upward carrying the `rearlend ofthe sear with it. This liresthe upper barrel. The sear remains in this lifted position allowingblade for that one barrel only, returning to the same position each timethe gun is reloaded. In double barrel guns controlled by one triggerthere is a movement caused by the recoil to be overcome. This is termedthe involuntary pull, that is the linger strikes the trigger the secondtime involuntarily, producing a 'double discharge when not desired. .l

To prevent this I fork therear end of the blade 9 as shown at 11 andprovide the escapement 16 and the posts 14 and 15.

In Fig. 2 it will be noted that the blade is under the right hand sear 6and the button 8 isin forward position, as in Fig. 1. In this case bothmembers of the frk 11 are to the right of the center escapement block 16and in position to actuate the right hand sear. When the trigger andsearare pulled the fork 11 rides upward along the right hand side of theescapement center block and on release of the trigger, the bladeactuated by spring 12, rocks on its pivot and the forked end rides downagain until it can pass under the block 16, which is angled as shown inFig. 8, then actuated by spring 13, the blade passes under the block andstrikes the cone shaped escapement post 15, causing blade to rise again.struck by the left hand member of the fork and as the blade rises toclear the post the right hand member of the fork. strikes the right handside of the block. This position is shown in Fig. L and may be termedthe neutral position of the blade 9. This position is held for only aninstant butlong enough to prevent blade passing under the left hand searuntil the effect of the recoil is over. Consequently contact of thefinger with the trigger while the blade is in neutral position will notfire the gun.

The same action, in reverse, takes place when the selective button is inits rear position.

`Spring 13 actuates blade in both right and left hand directions, as theshifting of the button 8 changes the bearing which the free end of thespring 13 takes on the blade post 7.

From the drawings and the description given above it is thought that thedevice will This post is be readily understood by those accustomed tothe manufacture and use of firearms.

This invention while adapted to use With guns having side by sidebarrels, is also to be considered in connection with the applicationabove mentioned.

l. In a double barrel gun having two hammers, provided each with a camportion and two sears, of a movable trigger blade post, a blade mountedtherein to swing v ertically and laterally, springs for producing saidblade movements, and a trigger for actuating said blade, the bladeswinging alternatelyl under lateral spring pressure from one sear to theother, and a roller carried by the blade.

2. In a one trigger device for double barrel guns, a vertically andlaterally movable trigger blade, a slidable blade post, a spring forlifting the blade vertically and a spring for swinging the bladelaterally, a roller carried -by the forward end of the blade and adaptedto engage the hammers,

and a fork at the rear end of the blade, an escapement center block, andescapement posts on opposite sides of said block, said block and postsbeing engaged by the forked end of the blade.

3. In a device of the kind described, a slotted trigger plate, a bladepost having its shank working loosely in said s lot, a selective buttonon the'outer end lof the shank, a blade mounted to rock vertically inthe post, and a spring vhaving its free end bear- 'ing on the bladepost, said spring'bearing on opposite sides of the` post center as theshank is shifted from end to end of said slot.

4. The combination witha vertical and laterally swlnging trlgger blade,an angled lescapement block adapted to be engaged by the rear forkedportion of the blade,lconical escapement posts arranged on oppositesides ofthe escapement block'and adapted to rel tard lateral movement ofthel blade, and means for actuating said blade.

5. In a double barrel gun having duplicate hammersA and sears, of atrigger blade adapted to alternately engage said hammers and sears aslong as the gun remains unopened, and a retarding means comprising aforked end portion carried by the blade, an angled escapement block, andconical posts arranged on opposite sides of the block, said fork memberpassing under the block, and one member of the fork engaging the blockas the other member strikes and rides up one of said posts, therebyretarding momentarily lateral movement of slotted. trigger plate, a.blade post rotatable and sldable in the slot, a blade havingl a rolleron cockingbf the hammerand give rear forked end, a roller carried by theforlateral movement to the blade, and an esward end of the blade, aspring for impartcapement adapted to engage said forked ing verticalrocking movement to the blade, end of the blade and regulate lateralmove- 5 a spring bea-ring on the post block and givment of the blade asand for the purpose 15 ing lateral movement to the blade, the bearsetforth'.

ing peint of said spring shifting when the In testimony whereof I haveaiiixed my post is moved from one end of Athe slot to signature. theother, a trigger adapted to engage the A 10 blade, hammers adapted toengage said GEORGE H. GIDDINGS.

